Improvement in beioh-doss



@with gisten strnt titre.

ABRAHAM K. AND HARRISON r. HOOD, OF LOWELL, MASSACHUSETTS.

Letters Patent IVO. 62,748, dated Illkirch 12, 1867 IMPROVEMENT IN BENGl-DOGSi .fallait Srlgrnlercfttnt tu im illust l'cters -n'tnrt mit uniting. inn nt the simu.

To ALL WHOM rr MAX 'OONOEnNr Be it known that we, ABRAHAM K. and HARRISON P. HOOD, both of Lowell, county ot' Middlesex, and State of Massachusetts, have invented new and useful improvements in Bench-Hooks; :influe do hereby declare that the' following is a full and exact description. thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of our invention consists in the arrangement and construction of the case, hook, spindle, and cam, as hereinafter described. i i A l To enable others skilled in the art to make and use our invention, we will proceed to describe its construe Jtion end operation. Y 4

Figure 1 represents a. plan of our improved benehfhook;`

Figure 2 represents :t side elevation of the same.

Figure 3 represents a longitudinal section through A and B of iig. 2.

Figure L represents n. vertical section through C 'and D of iig. l. u

a represents the case, Z the hook, e the cam-spindle 'with its bearingsd e und o,f the spindle-wrench, g the cai-in, h the pressure-block, and z' the spiral spring. We construct the outsiledof thehclfse a as seen at lig-s. Zand 3. The body being round and the top square, supersedes the neeessityof cutting a square hole through the bench. The socket u, or inside of the case a, muy be' made in diferentforms, but we prefer the forni as shown in the drawings; the vtop el' the case 4a, being so formed :is to receive the lhook b, flush with the top of the Oase a-tvhen on its seat. The outside ofthe hook b is so formed ns to correspond with the internal shape of the case a, the top'of the hook b being-serrated in the usual wey; also, a recess is formed of suicient depth and diameter for the reception and action of the spindle-wrenchf. A hole Vis made through the hook Z for the reception' of the 4cam-spindle e, 'this hole being` contracted at c", which forms the bearing o, as seen at fig. 4, also leaving below the ben-ring 0 a. recess for the reception of the spiral spring Between the bearings 0l land o, in the hook a hole or mortisc is made for the reception ofthe pressurebloek 71., which is to be nicely adjusted and fitted 'to the sanne, being of the required size and shape. The cani-spindle c isformedso as ,to fit the bearings d e and o; also a suitable caring, is formed on the same to give the requisite action and pressure when Operated against lthe pressuieblock i.- These several parts being nished, put together, and adjusted in their proper places, the

hook is then fastened to the bench in any desired locution. vThe operator then, by aid of the spindle-wrenchf, turns the spindle c, which relieves the cam g from the pressure-block L; this instantly causes-the hook b to rise by the means of' the spiral spring When the hook b is at its desired height the-operator fastens and secures the saine' at will by reversing the motion ofthe spindle To loweror depress the'ho'ok b to any point, or on its seat` the operator simply gives n slight turn to the spindle c, which relieves the com g from the'pressure-bloelc 7L, presses down the hook toits requiredplace and is the-n held :ind fastened by the action of the cani g, as before.

` The simplicity, eiliciency, and cheapnessof theartiele when manufactured, its easy adjustment and attachment to the bench, render it of great value, and when Once'used its service cannot Well be dispensed with.

What We claim es our invention, and desire to secure by Letters Patent, is" The cam-spindle c and block h when operating substantially as describedand for-the purpose fully set forth.

' ABRAHAM K. HOOD, HARRISON P. HOOD.

Witnesses: v

ABIEL PEVEY, GEo. E. PEVEY. 

